I've tried several sanding products and keep coming back to these. Long lasting with plenty of surface area to use. Works best for sanding parts and loose pieces versus attached parts and little nooks and crannies. A single sanding stick typically lasts me half way through Dragon armor kit before it gets overloaded with plastic dust and/or seems worn down to the point of needing replacement. The foam board has some give but does does not buckle too easily. I use a mixture of the 320, 400, and 800 grit sanding sticks for most armor kits, and especially the 400/800 grit on figures.